Horbay1939 wrote:
When I turn power on keyboard lights up but screen stays black. Have tried powering on/off without success. Also tried various suggested key combinations also no success.
Sounds like the display assembly/projector cable has failed in some manner.
Connecting to an external monitor is a work a round / test ...
In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment
Make an appointment for a "hardware issue"—
https://www.apple.com/retail/geniusbar/
Outside the USA
https://locate.apple.com/country
Learn how to get your Mac fixed and how much it will cost. https://support.apple.com/mac/repair/service
Get your Mac ready for service - Apple Support https://support.apple.com/en-us/HT209095